Sound-reproducing instrument.



0. G. ROSE. SOUND REPBODUOING INSTRUMENT. APPLICATION FILED APR. 24.1908.

Patehted Mar. 30, 1909.

WITNESSES: ml Ego flflm d9! ATTORNEY ovEnEND o. Ross, on CAMP M EKER,CALIFORNIA.

SOUND-BEPRODUCING 'IFTSTRUMENI Specification of Letters 'Patent.

I Patented March so, 1909.

Application filed April 24, 1908. Serial No. 429,048.

To all whom it may concern:

Be it known that I, OVERENDG. Ross, a citizen of the United States,residing at Camp Meeker, in the county of Sonoma and State ofCalifornia, have invented certain new and useful Improvements inSound-Reproducing Instruments, of which the followingis a speciiication.I

In an applicationfor Letters Patent of the United States of even dateherewitl1;'I described -a focusing and analyzing device for sound wavescomprising a boxer chamber having therein a focusing an analyzing diskarranged at right angles to the course of the sound Waves, and havingthe function of focusing the sound waves and analyzmg and splitting themup so that, as reproduced, the

- sounds will occupy the same relative positrons which they occupiedwhen originally '20 played or otherwise produced when making theoriginal record My present nvention relates particularly to thecombination .of the focusing and j analyzing device of the characterjust mentioned, with a hollow or tubular extension ,whereby the devicemay be directly asso-' ciated with the reproducing instrument with-.

out the intervention of a horn. This connecting member, with theanalyzing device, may be attached to either a disk ora cylinder talkingmachine. They will take the place of the horn and analyze, focus, andaugment sensitive to the finest sound waves.

the sounds from the reproducer.

The invention consists in the features and combination and arrangementof parts hereinafter described and particularly pointed out in theclaims.

in the accompanying drawingsFigure 1 is a longitudinal sectional viewthrough one embodiment ofmy invention; Fig. 2 is a cross'sectional Viewthrough the device of Fig. 1; and Fig. 3 a modified form of theapparatus. I

In these drawings l indicates the sound box or chamber in which isarranged the focusing and. analyzing diskor diaphragm 2 which is held byhair like, wires 3 which are taut and hold the'diskin a manner to be Thebox at each end is of conical form, as at 4, and at r the end from whichthe sounds are omitted the conical portion 4 connects with a flaringdiaphragm or opening l'or the sound waves to enter, as in the devicedescribed in the application above referred to.

Instead of the form shown in Fig. 1, I may provide, intermediate thesound box and the conical extension or connecting tube, an invertedtruncated conical portion 7 Fig. 3. This also provides an owning or airdiaphragm at 8 through which the sound waves pass before striding theanalyzing disk. I prefer, howevc the form shown in Fig. 1, as the soundwaves will be conducted by the tubular extension 6 directly to the soundbox. The tubular extension 6 is designed fbr direct attachment to therepro- .ducing machine, and, as a result] of this use the reproducedsounds are as loud as when the. sound box is used with the ordinaryhorn. I secure the additional advantage of compactness and simplicity,it being possible to pack the device within a small. comass. i When theattachment is used in connection with a disk machine, the conicalconnccting tube 6 at its smaller end is adapted to fit into the hornsocket. on the machine.

In the caseof cylinder machines the free instruments, having a hollowtruncated continuation thereof at or near its buter end and a disk susended adjacent said truncated portion, su stant'ially as described.

rat the end is 2. A tapered horn for sound reproducing I In'-t'e'st'imoliy, w h ejreoffl haveflafiixedj'm y' instruments having a.hollow truncated con-L signaturejinl iteseneelof-two witilessesjthistinuattion thereof at or near its outer 'end- 28th day ofebi uary 1908..

and a disk suspended adjacent the said. trun OVER END G 5 cated ortionand a flared portion beyond: Witness es r the be low truncated portionsubstantially ;ERX N,

as described v

